1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
" Author: Daniel Schemala <istjanichtzufassen@gmail.com>
" Description: rustc invoked by cargo for rust files
call ale#Set('rust_cargo_use_check', 1)
call ale#Set('rust_cargo_check_all_targets', 1)
let s:version_cache = {}
function! ale_linters#rust#cargo#GetCargoExecutable(bufnr) abort
if ale#path#FindNearestFile(a:bufnr, 'Cargo.toml') isnot# ''
return 'cargo'
else
" if there is no Cargo.toml file, we don't use cargo even if it exists,
" so we return '', because executable('') apparently always fails
return ''
endif
endfunction
function! ale_linters#rust#cargo#VersionCheck(buffer) abort
if has_key(s:version_cache, 'cargo')
return ''
endif
return 'cargo --version'
endfunction
function! s:GetVersion(executable, output) abort
let l:version = get(s:version_cache, a:executable, [])
for l:match in ale#util#GetMatches(a:output, '\v\d+\.\d+\.\d+')
let l:version = ale#semver#Parse(l:match[0])
let s:version_cache[a:executable] = l:version
endfor
return l:version
endfunction
function! s:CanUseCargoCheck(buffer, version) abort
" Allow `cargo check` to be disabled.
if !ale#Var(a:buffer, 'rust_cargo_use_check')
return 0
endif
return !empty(a:version)
\ && ale#semver#GreaterOrEqual(a:version, [0, 17, 0])
endfunction
function! s:CanUseAllTargets(buffer, version) abort
if !ale#Var(a:buffer, 'rust_cargo_use_check')
return 0
endif
if !ale#Var(a:buffer, 'rust_cargo_check_all_targets')
return 0
endif
return !empty(a:version)
\ && ale#semver#GreaterOrEqual(a:version, [0, 22, 0])
endfunction
function! ale_linters#rust#cargo#GetCommand(buffer, version_output) abort
let l:version = s:GetVersion('cargo', a:version_output)
let l:command = s:CanUseCargoCheck(a:buffer, l:version)
\ ? 'check'
\ : 'build'
let l:all_targets = s:CanUseAllTargets(a:buffer, l:version)
\ ? ' --all-targets'
\ : ''
return 'cargo '
\ . l:command
\ . l:all_targets
\ . ' --frozen --message-format=json -q'
endfunction
call ale#linter#Define('rust', {
\ 'name': 'cargo',
\ 'executable_callback': 'ale_linters#rust#cargo#GetCargoExecutable',
\ 'command_chain': [
\ {'callback': 'ale_linters#rust#cargo#VersionCheck'},
\ {'callback': 'ale_linters#rust#cargo#GetCommand'},
\ ],
\ 'callback': 'ale#handlers#rust#HandleRustErrors',
\ 'output_stream': 'both',
\ 'lint_file': 1,
\})
|
